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#include <iostream>
#include <vector>
#include <algorithm>
#include <iomanip>
#include <set>
#include <list>
#include <string>
#include <cmath>
#include <stack>
#include <map>
#include <sstream>
#include <queue>
#include <deque>
using namespace std;
struct point {
int p, time;
};
int main() {
int n, k;
while (cin >> n >> k) {
point start;
start.p = n; start.time = 0;
vector<int>times(100001, 999999);
queue<point>q;
times[n] = 0;
q.push(start);
int ans;
while (!q.empty()) {
&...
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